The Air Operated Valve (AOV) is a valve that opens and closes valves using air pressure. As air pressure is used, there is almost no danger of an explosion occurring compared with valves that are operated with electric signals. As the AOV operates under pressure of as little as about 5kgf/cm2, the product can be used any place where air is supplied. There is the Normal Close Type and the Normal Open Type according to valve conditions, whether the valve is open or closed in normal times.





Step 1. In the normal close type, the stem connected with the round plate goes downward in normal times and the valve is closed.
Step 2. If air pressure is applied from the lower side at this time, the round plate is moved upward by incoming air pressure.
Step 3. The closed orifice is opened and the fluid (or gas) flows.
Step 4. To close the valve again, you should block incoming air pressure and vent air within the product.
Step 5. The round plate and the stem go downward again with the restitution force of a spring located in the upper part, the valve closes and blocks the flow of the fluid.



* Features

- Normal close type : When valve is closed in normal, if air is supplied, it will open automatically.
- The minimum working pressure of air is 5kgf/cm2.
- The underbody of A.O.V where liquid or gas passes through also have 4 types as needle valve.
- The system can be controlled remotely.
- Driven by air, the explosion-proof valve is safer than electric type which may explode.
- A valve using stainless steel 316 cold material for excellent corrosion resistant.



* Pressure & Tube size

Pressure(psi)	kg/f	bar	Tube Size
7500	527	517	3/8"
20000	1406	1378	1/4", 3/8", 9/16", 3/4", 1"
60000	4218	4136	1/4", 3/8", 9/16"

* As all sizes are for reference, they can be different from actual sizes.
* Please contact us for details or send to online inquiry, We will give you respond as soon as possible.



* Body types





* Other product

	High pressure needle valve			High pressure pipe needle valve
	High pressure check valve			High pressure ball valve
	High temperature valve			High pressure control valve
	Air operated valve			High pressure tube fitting
	High pressure tube			High pressure nipple
	Low pressure tube			High pressure gauge
	High pressure regulator			Back pressure regulator
	High pressure union adapter			High pressure regulator
	High pressure adapter			High pressure male adapter
	High pressure tube support			Radiating pipe

* Ordering option

- As our products are divided into pressures of 5,500~150,000psi, body type and port size, you can use them according to the specifications which you want to use.
- Our products generally are produced with STS materials, but they can be manufactured with other materials on demand so that various fluids and gases can be used.
- Please inquire with us about special materials apart from the above-mentioned materials, such as STS316, HC-276, INC600, INC700, Ti and Ni.

for more details, please contact us.